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#!/bin/sh -u

# Register protocol definitions for GDB, the GNU debugger.

# Copyright 2001, 2002 Free Software Foundation, Inc.

#

# This file is part of GDB.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

move_if_change ()

{

    file=$1

    if test -r ${file} && cmp -s "${file}" new-"${file}"

    then

        echo "${file} unchanged." 1>&2

    else

        mv new-"${file}" "${file}"

        echo "${file} updated." 1>&2

    fi

}

# Format of the input files

read="type entry"

do_read ()

{

    type=""

    entry=""

    while read line

    do

        if test "${line}" = ""

        then

            continue

        elif test "${line}" = "#" -a "${comment}" = ""

        then

            continue

        elif expr "${line}" : "#" > /dev/null

        then

            comment="${comment}

${line}"

        else

            # The semantics of IFS varies between different SH's.  Some

            # treat ``::' as three fields while some treat it as just too.

            # Work around this by eliminating ``::'' ....

            line="`echo "${line}" | sed -e 's/::/: :/g' -e 's/::/: :/g'`"

            OFS="${IFS}" ; IFS="[:]"

            eval read ${read} <<EOF

${line}

EOF

            IFS="${OFS}"

            # .... and then going back through each field and strip out those

            # that ended up with just that space character.

            for r in ${read}

            do

                if eval test \"\${${r}}\" = \"\ \"

                then

                    eval ${r}=""

                fi

            done

            break

        fi

    done

    if [ -n "${type}" ]

    then

        true

    else

        false

    fi

}

if test ! -r $1; then

  echo "$0: Could not open $1." 1>&2

  exit 1

fi

copyright ()

{

cat <<EOF

/* *INDENT-OFF* */ /* THIS FILE IS GENERATED */

/* A register protocol for GDB, the GNU debugger.

   Copyright 2001, 2002 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

/* This file was created with the aid of \`\`regdat.sh'' and \`\`$1''.  */

EOF

}

exec > new-$2

copyright $1

echo '#include "regdef.h"'

echo '#include "regcache.h"'

echo

offset=0

i=0

name=x

expedite=x

exec < $1

while do_read

do

  if test "${type}" = "name"; then

    name="${entry}"

    echo "struct reg regs_${name}[] = {"

    continue

  elif test "${type}" = "expedite"; then

    expedite="${entry}"

    continue

  elif test "${name}" = x; then

    echo "$0: $1 does not specify \`\`name''." 1>&2

    exit 1

  else

    echo "  { \"${entry}\", ${offset}, ${type} },"

    offset=`expr ${offset} + ${type}`

    i=`expr $i + 1`

  fi

done

echo "};"

echo

echo "const char *expedite_regs_${name}[] = { \"`echo ${expedite} | sed 's/,/", "/g'`\", 0 };"

echo

cat <<EOF

void

init_registers ()

{

    set_register_cache (regs_${name},

                        sizeof (regs_${name}) / sizeof (regs_${name}[0]));

    gdbserver_expedite_regs = expedite_regs_${name};

}

EOF

# close things off

exec 1>&2

move_if_change $2